:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #d8dde5;
  --text: #1f2933;
  --muted: #667085;
  --accent: #1f6feb;
  --danger: #b42318;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.hidden { display: none !important; }
.app { min-height: 100vh; }

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}
.login-panel {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
h1 {
  margin: 0 0 14px;
  font-size: 22px;
  letter-spacing: 0;
}
label {
  display: grid;
  gap: 6px;
  margin: 14px 0;
  font-size: 14px;
  color: var(--muted);
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
  color: var(--text);
}
textarea { resize: vertical; min-height: 78px; }
button {
  border: 0;
  border-radius: 6px;
  padding: 11px 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
}
button.ghost {
  background: #eef2f7;
  color: var(--text);
}
.error { color: var(--danger); min-height: 20px; }

.chat {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.topbar p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.timeline {
  padding: 16px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.task {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 13px;
}
.task-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}
.status {
  color: var(--muted);
  font-size: 13px;
}
pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  line-height: 1.5;
}
.prompt {
  color: #344054;
  background: #f8fafc;
  border-radius: 6px;
  padding: 10px;
}
.output {
  margin-top: 10px;
  color: #101828;
}
.risk {
  margin-top: 10px;
  border: 1px solid #fecdca;
  background: #fffbfa;
  color: var(--danger);
  padding: 10px;
  border-radius: 6px;
}
.confirm {
  margin-top: 10px;
  background: var(--danger);
}
.composer {
  background: var(--panel);
  border-top: 1px solid var(--border);
  padding: 12px;
  display: grid;
  grid-template-columns: minmax(120px, 180px) 1fr auto;
  gap: 10px;
  align-items: end;
}

@media (max-width: 760px) {
  .composer { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; }
}